# INET4

{% hint style="info" %}
INET4 is available from MariaDB 10.10.
{% endhint %}

## Syntax

```sql
INET4
```

## Description

`INET4` is a data type to store IPv4 addresses, as 4-byte binary strings.

{% tabs %}
{% tab title="Current" %}
Casting from [INET4](https://mariadb.com/docs/server/reference/data-types/string-data-types/inet4) data types to `INET6` is permitted, allowing for example comparisons between the two data types, and for `INET4` values to be inserted into `INET6` columns.
{% endtab %}

{% tab title="< 11.3" %}
Casting from [INET4](https://mariadb.com/docs/server/reference/data-types/string-data-types/inet4) data types to `INET6` is **not** permitted.
{% endtab %}
{% endtabs %}

## Examples

```sql
CREATE OR REPLACE TABLE t1 (a INET4);

INSERT INTO t1 VALUES('0.0.0.0'), ('255.10.0.0'), ('255.255.255.255');

INSERT INTO t1 VALUES (0xa0000001);
INSERT INTO t1 VALUES (0xf0000000);
INSERT INTO t1 VALUES (0xff000001);

SELECT HEX(a), a FROM t1 ORDER BY a;
+----------+-----------------+
| HEX(a)   | a               |
+----------+-----------------+
| 00000000 | 0.0.0.0         |
| A0000001 | 160.0.0.1       |
| F0000000 | 240.0.0.0       |
| FF000001 | 255.0.0.1       |
| FF0A0000 | 255.10.0.0      |
| FFFFFFFF | 255.255.255.255 |
+----------+-----------------+
```

Casting from `INET4` to [INET6](https://mariadb.com/docs/server/reference/data-types/string-data-types/inet6) is permitted, allowing direct inserts.

{% tabs %}
{% tab title="Current" %}

```sql
CREATE TABLE t1 (a INET6);

INSERT INTO t1 VALUES('0.0.0.0'), ('255.10.0.0'), ('255.255.255.255');
Query OK, 3 rows affected (0.027 sec)
```

Comparisons are also permitted:

```sql
CREATE OR REPLACE TABLE t1 (i4 INET4, i6 INET6); 
INSERT INTO t1 VALUES('10.10.10.10','::ffff:192.168.0.1');

SELECT LEAST(i4,i6) FROM t1;
+--------------------+
| LEAST(i4,i6)       |
+--------------------+
| ::ffff:10.10.10.10 |
+--------------------+
```

{% endtab %}

{% tab title="< 11.3" %}

```sql
CREATE TABLE t1 (a INET6);

INSERT INTO t1 VALUES('0.0.0.0'), ('255.10.0.0'), ('255.255.255.255');
ERROR 1292 (22007): Incorrect inet6 value: '0.0.0.0' for column `test`.`t1`.`a` at row 1
```

{% endtab %}
{% endtabs %}

<sub>*This page is licensed: CC BY-SA / Gnu FDL*</sub>

{% @marketo/form formId="4316" %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://mariadb.com/docs/server/reference/data-types/string-data-types/inet4.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.